1
3
2
5
9
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6
6
1
9
4
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9
6
3
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7
4
3
7
5
6
7
3
9
1
6
8
1
Time 00:00
Mistakes 0
Ready
Expert Sudoku #234
XY-Wings, forced chains and positions that punish impatience.
| Difficulty | Expert |
| Clues given | 29 of 81 |
| Technique score | 46.4 |
| Rated techniques | 4 |
Techniques this puzzle needs
Where to start
The first move on this board is a Naked Single: Row 1, column 1 already sees all eight other digits in its row, column and box, so it can only be 4.
Progress is saved in this browser automatically. Use the keyboard: arrows to move, 1–9 to fill, N for notes, H for a hint.